... : 50,000 hours 110-220V, 35W, 50W, 70W MH/HPS Electronic Ballast, Suitable For MH & HPS Lamp70W MH ballast, HPS ballastFeatures: Suitable ... restart at 55°cElimination of lamp flicker ASIC built-in intelligent control hot-start, immediately shutdown if the ballast fails to ... Input voltage: 110 to 220V Power factor: >0.95 Frequency range: 50/60Hz No-load protection: 5s Usage temperature: 25 to ...